Voltage Phase Reversal Test; Injection Test Setup #2 - GE 489 Instruction Manual

7.3 ADDITIONAL FUNCTIONAL TESTING
The can detect voltage phase rotation and protect against phase reversal. To test the phase reversal element, perform the
following steps:
1. Alter the following setpoints:
S2 SYSTEM SETUP\VOLTAGE SENSING\VT CONNECTION TYPE:
S2 SYSTEM SETUP\GEN. PARAMETERS\GENERATOR PHASE SEQUENCE:
S3 DIGITAL INPUTS\BREAKER STATUS\BREAKER STATUS:
S6 VOLTAGE ELEMENTS\PHASE REVERSAL\PHASE REVERSAL TRIP:
S6 VOLTAGE ELEMENTS\PHASE REVERSAL\ASSIGN TRIP RELAYS:
2. Apply voltages as per the table below. Verify the operation on voltage phase reversal
APPLIED VOLTAGE
Va = 120 V∠0°
Vb = 120 V∠120° lag
Vc = 120 V∠240° lag
Va = 120 V∠0°
Vb = 120 V∠240° lag
Vc = 120 V∠120° lag
Setup the 489 device as follows for the following tests.
7
7-12
EXPECTED RESULT
NO TRIP
PHASE REVERSAL TRIP
Figure 7–2: SECONDARY INJECTION SETUP #2
489 Generator Management Relay

7.3.4 VOLTAGE PHASE REVERSAL TEST

Wye
ABC
Breaker Auxiliary a
Unlatched
Trip
OBSERVED RESULT

7.3.5 INJECTION TEST SETUP #2

7 TESTING
GE Power Management